Appliance for rifling the margin of the sole of footgear



M. M. SORENSEN.

APPLIANCE FOR RIFLING THE MARGIN OF THE SOLE 0F FOOTGEAR.

APPLICATION man ocT. 3. 1919.

1,876,474. 7 P ten May 3, 1921.

I111 vex/tor fid'z'en aen,

Miney UNITED STATES PATENT OFFICE.

MARIUS METI-IILTUS SijRENSEN, OF VALLERGD, NEAR RUNGSTED, DENMARK.

APPLIANCE FOR RIFLING THE IVIARGIN 0F TI-IE SOLE OF FOOTGEAR.

Application filed October 3, 1919.

To all whom it may concern:

Be it known that I, MAniUs lvlnrHILrUs Siinnxsnx, a subject of the Zing of Denmark, residing at Vallerod, near Rungsted, isle of Sealand, in the Kingdom oi": Denmark, have invented certain new and useful Improvements in Appliances for Rifling the Margin of the Sole of Footgear, of which the following is a specification.

The rotating appliance generally used for rifling the margin of the sole of footgear has, on its periphery, a series of projections much resembling the cogs on a conical cogwheel, and, by using this appliance, the profile of its periphery is developed along the margin of the sole by means of simple pressure-effect.

This invention refers to a rotating ridingtool which, unlike that already known, does not act entirely by means of pressure, but also has a sliding or polishing eli ect, since the movement taking place between the sole and the tool principally occurs transversely to the longitudinal direction of the edge oi the sole.

One form of construction is, by way of example, diagrammatically shown on the lrawing in Figure l, which is a side-view, and Fig. 2, which is a front view.

The tool here shown is a wheel 3 with single or multiple screw-thread 4 on its periphery. The size and form of the screw thread in section corresponds to the desired rifling. The wheel is disposed on a rotating shaft, axle, mandrel, or the like, and the margin of the sole 5, which is not yet connected with the upper, is held pressed against its periphery. The screw-thread will then be impressed into the margin of the sole, which is thereby rifled. At the Specification of Letters Patent.

Serial No. 328,140.

same time, the wheel can be moved along the margin 01" the sole, or, if the underlying surface upon which the sole rests is movable, the wheel may itself carry the margin of the sole forward.

The form of construction here shown is, as already said, merely an example, and it can be modified and altered in many differ ent ways. Instead of one or more rotating entire wheels, there may be used one or more segments, which rotate or oscillate back and forth. The projections that do the rifling do not need to be continuous as is the case in screw-threads or to have the shape or"- continuous ribs, but may be more or less interrupted. The main feature of the in vention in general, only that each separate rifle, 2'. 6., each separate depression in the leather, is gradually formed by the action of several consecutive parts of the same projection as it moves in the longitudinal direction of the depression, thus at a ri ht angle or approximately at a right angle to the margin of the sole. In accordance with this method, each projection has the shape or" an are or eventually an entire circle, with its center in or approximately in the axis of revolution.

I claim A rotating tool for rifling the margin of the sole of footwear, having a projection on its periphery in the shape of a screwthread.

In testimony whereof I afiix my signature in the presence of two witnesses.

MARIUS METHILTUS SOREHSEN.

lVitnesses E. WEIESNERE, N. NINGHJENINN.

Patented May 3, 1921. 

